How do I restrict my data that needs to be plotted?

I have the following code:

xrayslice = 'projection0000.tif';

A = imread(xrayslice, 1);

C = A(60,:);

plot(C)

axis([200,300,0,40000])

xlabel('Pixel');

ylabel('Counts');

title('Projection of X-Ray slice');

Which produces a plot that I want, but only because the axis are restricted. How would I go about producing the same graph but by restricting my data, not my axis? I need my x values to be plotted between 200 and 300 and my y values to be plotted between 0 and 40000. I have tried using

if C<40000

plot(C)

end

but this doesn't work. Any helps or tips would be appreciated. Thank you!

Answer 1

[Babak]

 C = A(60,:);

 indices = C<40000;
 C_in_Range = C(indices);

 plot(C_in_Range)

 axis([200,300,0,40000])

Answer 2

[Emily]

Thank you!